Power breaker apparatus

Abstract

A power breaker apparatus comprises a permanent fuse and resistors connected in parallel to the permanent fuse through a connecting conductor and is connected between a power source and a load to break a current supply to the load when a fault current is passed. At least external surfaces of the parallel resistors near the connecting parts of the connecting conductor are coated by an insulating coat.

What is claimed is: 
     
       1. A power breaker apparatus comprising a permanent fuse and at least one resistor connected in parallel to said permanent fuse through a connecting conductor having a pair of terminals, and being connected between a power source and a load current supply to break said current supply to said load when a fault current is passed, wherein said at least one resistor comprises: a resistor element, said resistor element having two ends, one of said ends adjacent each of said terminals;   an insulating coating material coating each of said ends;   means for securing each of said ends to a respective terminal, said securing means being electrically insulated from said resistor element and said pair of terminals; and   easily deformable conductive spacing means between each of said ends and said respective terminal;   wherein said insulative coating material covers said conductive spacing means,   whereby said conductive spacing means is deformed by the securement of each of said ends to said respective terminal so as to ensure electrical contact therebetween.   
     
     
       2. The apparatus of claim 1 wherein said conductive spacing means is at least one copper plate. 
     
     
       3. The power breaker apparatus of claim 2, wherein said resistor element is formed of a cohesive unit. 
     
     
       4. A power breaker apparatus according to claim 1 wherein the insulating coat is an insulating tape. 
     
     
       5. A power breaker apparatus according to claim 1 or 2 wherein the insulating coat is provided on all of the external surfaces of the resistors.